Sink and the like



Jill- 20, 1942. Jf s rrz 2,270,774

SINK AND THE LIKE origin Filed June 29, 1956 s Sheets-Sheet 1 3nventorhaw; Sid/117:

Jan. 20, 1942. J. STANITZ 2,270,774

smx AND THE LIKE Original Filed Jun 29, 1936 s Sheets-Sheet 2 lmaentorJacqlms 570/2171 Mummy Jan. 20, 1942. J, STANITZ 2,270,774

SINK AND THE LIKE Original Filed June 29, 1936 3 Sheets-Sheet 3 Zhwmtorchfiylms Jlaw'lz Patented Jan. 20, 1942 SINK AND THE LIKE JacquesStanitz, Warren,

Ohio, assignor, by

mesne assignm nts, to Steel Plumbing Wares, Inc., Detroit, Mich, acorporation of Michigan Original application Ju 87,846, now Patent No.

no 29, 1936, Serial No. 2,121,672, dated June 21,

1938. Divided and this application May 6, 1938,

Serial No. 206,401

4 Claims.

The invention relates to sinks, wash basins and the like, formed fromsheet or plate metal, and more particularly to the manufacture of such aproduct from a single sheet metal blank by stamping or drawingoperations; and this application is a division of my copendingapplication Serial No. 87,846, entitled Method of making sinks, filedJune 29, 1936, now Patent 2,121,672, granted June 21, 1938.

Such a sink product includes a fluid receiving bowl and in some casesone or more drain boards and the bowl and drain boards terminate onthree sides thereof in a rolled or turned rim formed as a part of adepending flange, and the fourth side thereof terminates in an uprightback wall or splash back rearwardly flanged to form a continuation ofthe depending rim flange.

Such sink products are usually manufactured from steel and covered witha protective coating such as a vitreous enamel coating, and the presentinvention is a particular importance with respect to enamel coated sinksbecause no welding operations are performed during the manufacture ofthe sink, which if present, would cause difficulties in providing asatisfactory enamel coating. However the invention is not limited to themanufacture of enamel coated sinks because sink products may be made inaccordance with the present invention from non-ferrous metals, stainlesssteel, Monel metal or the like.

Sink products have been made from single sheet metal blanks, forinstance as shown in the Corrigan Patent No. 1,635,311 and in theStanitz Patent No. 1,916,910. However sinks made in accordance witheither of these patents require welding operations to be performed,

Sinks have also been made from single sheet metal blanks withoutrequiring any welding operations to be performed in connection with theformation of the turned rim, thereof which is continuous with a splashback flange.

However the latter methodof making suchsinks is quite complex andinvolvesta large nurnber"of special operations substantially a1l'""o'f"which utilize complicated dies and require complicated pressoperations. Also, these operations are accompanied by considerablehandling and turning of the sink product during the various stages ofits manufacture.

Accordingly it is a principal object of the present invention to providean improved method'of making sink products which overcomes thedifficulties and eliminates many of the expensive and complicated,operations involved in prior practice. a"

and the flange Furthermore it is an object of the present invention toprovide for the simplified manufacture of a sink product from a singlesheet metal blank in which a fluid receiving bowl, together in somecases with one or more drain boards, terminates in a rolled or turnedrim and in a comparatively high back wall or splash back; and in whichthe rim and splash back are each provided with a flange which extendsintegrally and coextensively around three sides of the bowl, and drainboards when present, and also around the ends and top of the splashback.

In addition, it is an object of the present invention to provide for thesimplified manufacture of a sink of the type just described in which theadvantageous stiffening ledge construction shown in my copendingapplication Serial No. 678,823 (Patent No. 2,045,969) may beincorporated, without preventing the improved simplified manufacturingoperations from being carried out.

Moreover, it is an object of the present invention to provide certainoperations in the manufacture of a sink of the type described whichenable the entire manufacture of sink product to be simplified; andwhich at the same time provide for the strengthening and stiffening ofthe resulting sink product between the table or generally horizontallyextending portions thereof and the upright splash back or generallyvertically extending portions thereof.

Moreover, it is an object of the present invention to provide for thesimplified manufacture of a sink of the type described without anywelding; which sink may be readily coated with a preferably acidresisting enamel coating of high quality so that the resulting coatingis uniform in appearance and characteristics and is free from flawswhich result if welded areas are present in the sheet metal base.

And finally, it is an object of the present invention to provide animproved sink or wash basin product of the foregoing character formedfrom a single blank of sheet metal without welds, which is very light inweight, which is inexpensive to manufacture, which has a pleasing andattractive appearance, which is very stifl and rigid, and which may beprovided with a vitreous enamel coating free from defects.

These and other objects and advantages apparent to those skilled in theart from the following description and claims may be obtained by thesink product construction hereinafter described in detail and claimed, apreferred embodiment of which is shown in the accompanying drawings.

The foregoing object and advantages are also obtained by the methods,method step and operations of making such sink products hereinafter setforth in detail and claimed, preferred steps of which are shown in theaccompanying drawings, and which may be stated in general terms asincluding drawing a single metal blank to form abowl or. basin withadjacent areas for drain board, splash back, and rim portions; drawingdrain board and splash back portions adjacent to the bowl with asurrounding raised turned rim formed as a part of a depending flange,providing excess metal adjacent to the places in the rim where thesplash back will extend upwardly from th bowl and drain board portionsby drawing inverted V-shaped troughlike projections adjacent to saidplaces in said rim, with the trough bottoms in the plane of the rim;trimming excess metal from the edge of the depending flange and fromportions of said trough-like projections; bending the splash back andits flanged rim portions upwardly to extend generally vertically atright angles to the remaining generally horizontally extending bowl,drain board and flanged rim portions, on a line passing through theaplces of said V-shaped trough portions and lying preferablesubstantially in the plane of the rim thereby leaving substantially flatangularly disposed ears adjacent to the bend in the raised turned rim;bending said ears to a position coplanar with the rearwardly extendingend flanges of the splash back rim and the depending or apron endflanges of the rim surrounding the bowl and drain boards; and thenforming inturned flanges on said apron and a splash back flanges.

In the drawings,

Figure 1 is a fragmentary perspective view, partly in section, showing asingle sheet metal blank from which the sink is made and showing thefirst bowl forming operation Fig. 2 is a similar view showing asucceeding operation for forming drain boards, a ledge, a splash backportion, a surrounding raised turned rim formed as a part of a dependingflange, and inverted V-shaped trough portions adjacent to the place inthe rim where the splash back will be bent upwardly;

Fig. 3 is a section taken on the line 3-4, Fig. 2;

'Fig. 4 is a section taken On the line 4-l, Fig. 2;

Fig. 5 is a view similar to Figs. 1 and 2 illustrating a succeedingtrimming step;

Fig. 6 is an end view looking in the direction of the arrows 6-8, Fig.5;

Fig. l is a perspective view similar to Figs. 1, 2 and 5, showing asucceeding bending operation in which the flanged splash back is bentupwardly along a line passing through the apices of the V-troughprojectionsand the raised rim;

Fig. 8 is an end view of the partially completed sink shown in Fig. 7;

Fig. 9 is a fragmentary sectional view taken on the line 9 -3, Fig. 8;

Fig. 10 is a perspective view similar to Figs. 1, 2, 5 and 7 showing asucceeding ear bending operation Fig. 11 is an end view of thesubstantially completed sink shown in Fig. 10:

Fig. 12 is a perspective view of the completed sink;

Fig. 13 is a section looking in the direction of the arrows l3-l3, Fig.12; and

Figs. 14 and 15 are enlarged fragmentary sections taken on the lines14-, and l5-l5, respectively, in Fig. 12.

Similar numerals refer to similar parts throughout the various figuresof the drawings.

Referring flrst to Figs. 12, 13, 14 and 15, the improved sink product igenerally indicated at It and may include'a fluid receiving bowl l1,having a bottom wall l8 provided with a drain opening 19, and havingsubstantially upright or vertical walls, preferably substantiallyrectangular in cross section and including a front wall 20, a rear wall2i and side walls 22, with preferably rounded corner walls 23therebetween.

A drain board 24 is preferably provided at each side of the bowl I1, andeach drain board 24 preferably has a multiplicity of drain grooves 25.The drain boards 24 each preferably slope downward toward the fluidreceiving bowl IT, as best shown in Fig. 12.

The bowl I! and drain boards 24 are preferably surrounded on three sidesby and terminate in 2. preferably continuous rolled or turned raised rim26, which is formed integrally as a part of the depending apron flangeor skirt 21. A ledge 28 is preferably formed at the rear of the bowl I1and the drain boards 24, which ledge 28 extends the full distancebetween the opposite ends of the ring, and may be located slightly belowthe plane of the upper surface of the rolled or turned rim 26 andslightly above th highest point in the sloping plane of the drain boards24, as well shown in Figs. 12 and 15. If desired, the ledge 28 may beformed with a slightly raised center panel portion 29 (Fig. 14) in whicha plurality of openings 30 may be formed for receiving faucet or otherplumbing connections.

The raised panel 29 may either be in the plane of the raised rim 26, ormay be located intermediate the plane of the raised rim 28 and the planeof the ledge 28, as shown. The parts thus far described may generallycomprise the table or generally horizontally extending portions of thesink i8.

At the rear of the ledge 28, an upright splash back 3| extendspreferably vertically upwardly and may comprise a central panel portion32 generally corresponding to the panel portion 23 and merging therewithby the small radius curve 33 (Fig. 14), and also depressed or embossedpanel portions 34 corresponding to the ledge 28 and merging therewith bythe large radius curve 35 (Fig. 15) so as to form a splash back having:2. turned raised rim 36 formed as a part of a rearwardly extendingflange 31 extending around the top and ends of the splash back 3|. Asshown, the panel 32 may be located in the plane of the splash back rim36.

The rearwardly extending flange 3?! formed around the top and ends ofthe splash back 3!, is formed integrally as a part of the dependingflange 2! surrounding the front and ends of the sink table portion andthe flanges 21 and 31 are joined by rounded corners 38 therebetween. Therounded corners 38, which are coextensive with and formed integrally asa part of the flanges 21 and 31, are provided by the improved method ofmanufacturing the sink hereinafter described in detail.

The flanges 2'! and 31 and corners 38 are preferably provided with ashort inturned flange 33; and corner bends turned rims 26 and 36,preferably substantially concentric with the curve 35 (Fig. 15)extending bgtween the splash back panels 34 and the ledge 2 It is to beunderstood that the panels 32 and 29 provided so as to be and ledge 28,respecneed not necessarily be raised above the panels 34 40 occurbetween the raised.

a blank "a. the drain horizontal location, as is coating. The method ofmaking sinks set forth in my prior Patent No. 1,916,910 may be utilizedin the manufacture of the sink it; and likewise the structural featm'esclaimed in my copending application, Serial No. 678,823 (Patent No.2,045,969) may be incorporated in the construction of the sink i3,

Althouth a double drain board type sink I 3 is shown in Fig. 12, it isfeatures or the improved sink construction may be incorporated in asingle drain board type sink, or in a simple basin type sink.

The manufacture of the novel improved sink It may be carried out inaccordance with the improved method as iollowst' A suitably shaped blankof sheet metal 30 (Fig. 1) is introduced between suitably shaped drawdies to draw the sink fluid receiving bowl ll therein. The blank 50 withthe bowl I! drawn therein is then formed by a succeeding operation insuitably shaped draw dies to the shape indicated generally at 30a inFigs. 2, 3 and 4. In the boards 24, the drain grooves 25, the turned rimIt and its depending flange 21, the ledge 28 and its center panelportion 2!, the splash back Ii including its panel portions 32 and 34and the rim 36 flanged at 31, are all formed to substantially theirfinished shape, although not their finished location.

In the blank 50a, thesink table portion including the bowl i1, drainboards 2|, ledge 3t and the surrounding flanged rim 28 are generally ina also the splash back portion 3i and its corresponding parts. Thesplash back II will later extend in a generally upright or verticalposition at right angles to the horizontal or table portion of the sink.

The top surfaces of the raised rims 23 and 36 are in the same horizontalplane; and the flanges 21 and 31, respectively, of the rims 3i and 36extend downwardly from the rim portions 26 and 36 an equal distance.Inverted V-shaped troughs are formed in the blank 50a extendingoutwardly from the flanges 21 and 31 adjacent the places where cornerswill be formed between the rims 26 and 36 when bending the splash back3i to an upright position.

The aplces I! of the v-troughs ii lie preferably substantially in theplane of the upper surface of the rims 26 and 33 and extend outwardlytherefrom generally in a line along which the bend will later occur,which bend line may be assumed to be the section line 3--3, Fig. 2. Theside walls or wings 53 of each V-trough ii are substantially at rightangles to each. other (Figs. 2 and 4) and are preferably each located inplanes extending at 45 degree angles below the plane of the rims 26 and36: and the intersection of the wings I3 coincides with the bend line.

A flash 5 extends outwardly from the lower edges of the flanges 21 and31 and the troughs 5|, as well shown in Figs. 2, 3 and 4.

In the next operation, the blank 50a is trimmed to have the shape shownat 5th in Figs. 5 and 6 by removing the flash 54, This trimmingoperation also removes portions of the wings of the V-troughs Ii so thatthey have an ear shape substantially as shown at Ila.

In the next operation, the splash back portion 3i is bent upwardly alonga bending line indicated in dot-dash lines at it in Figs. 5 and 7; andthe line 53 passes through the intersection oi-the ear shaped wings Ila,through the plane of the rims It and 3t and through the places ofintersection between the ledge 20 and splash back 3i. The bend line 35also lies back of the plane of the rear wall II of the sink bowl ii. Thebending is continued until the ear shaped wings bio lying on the splashback panel side or the bending line he in the same plane as the otherear shaped wings Bio of the troughs.

The shape of the blank at this state in its manufacture is indicatedgenerally at lie in Figs. 7 and 8. The ear shaped wings Ila have nowtaken on the shape of cars as indicated at lib: which ears ll b aresubstantially flat and lie in planes angularly disposed with respect toflanges 21 and 31. Each 'ear lib intersects the flanges 21 and 31 alongthe line ears Slb have rounded corners 31 and the plane of the earsstill lies substantially in the bend line 55. i

In the next operation, each ear Bib is bent backward along theintersection line It to a position coplanar with and in continuation ofthe depending flange 21 and rearward flange 31, as best shown in Figs.10 and 11. The substantially completed sink blank at this state in itsmanufacture'is shown at 50a in Figs lO and 11 and the only remainingoperations to complete the sink it are to form the intumed flanges 33 ontheflanges 21 and 3'! ears bib-51, which become the corners II; and toform the drain opening I! and the plumbing flxture openings 30.

Although a somewhat larger radius is shown at 40 in Figs. 14 and 15 thanis shown in Figs. 7, 8, 11, and 12, the bending of the splash back 3iupwardly is always performed upon the definite bending line 55. The sizeof the radius Ill is a matter ofchoice, but there must always be afillet of some size. A large radius or fillet may be provided forcleanliness and appearance. The rounding of the corner 40 may beaccomplished by so shaping the die surfaces of the bending die, or maybeaccomplished by a subsequent operation.

In its broadest aspect, the invention which comprises the presentimproved method contemplates forming a table or bowl panel and anintegral splash back panel surrounded by a continuous rim formed as;part of downtumed in a flat sheet blank on either side of a bendingline, forming portions projecting latpanel and parts of said projectingportions upwardly along said bending line to form said portions intolaterally proiectingflat ears,and bending said ears to a positioncoplanar with the bowl and splash back panelrim flanges, so that in thecomplete structure the splash back extends the entire length of theledge and the entire width of the rim at each end of the ledge.

Thus, the present invention provides an improved method and improvedmethod steps for inexpensively making a light weight sheet metal sinkfrom a single sheet or plate of metal free from welds, which may beenamel coated.

Accordingly, the present invention provides 5| (Fig. 8). The

' claims, is

more basin or bowl-panel; -the'words "sheet metal are from which it maythe words l-oiled the same is'raisedxin the splash methods and means forovercoming the difllculties and eliminating many of the expensive andcomplicated operations involved in the prior practice of making sinks ofthe type described from sheet metal.

In the foregoing description, certain terms have been utilized forbrevity, cleamess and understanding; but no unnecessary limitations areI to be implied therefrom beyond the requirements intended to" includesheet and plate metal of the I "desired ,or' necessary gauge, includingsteel,

stainless steel, Monel metal, or other metals be desired to constructsinks;

back panel: the words enamel coated are intended to refer to and includecoatingscthe'r thai vitreous enamel coatings if desired; the words bowlpanel and splashback panel a-reintendedto include all of thestructuralelements included, respectively, in the. generallyhorizontally and generally vertically extending portions of the sink;and the words bending line. are intended to include the .narrowband orzone, which may be curved to form fillets, at the various parts of thebowl panel and splash the'corner. or juncture between back panel;

Iclaimg e 1. A stamped and drawn sheet metal sink including a fluidreceiving bowl, a drain board extending from at least one side of thebowl, a continuous flat top rim formed integrally as a part of a.depending flange located in front oi the bowl and drain board andhaving a portion located at one side of the bowl and another portionlocated at the opposite side of the drain board, a horizontal ledge ofa-materially greater width than the width of the rim behind the bowl anddrain board extending from said rim portion at one side of the bowl tosaid rim portion at the opposite side of the drain board, said ledgebeing located in a plane below the rim, said drain board being locatedin a plane below the rim, an

integral splash back bent integrally upwardly from the rear of the ledgeand extending the entire length of the ledge and the entire width of therim at each end of the ledge, a flange disposed rearwardly of saidsplash back around the sides and top of the splash back, the rearwardlydisposed flange portions at the sides of the splash back being locatedrespectively in coplanar continuation of the depending flange portionsat said one side of the bowl and the opposite side of the. drain board,and an inturned flange extendingfrorn said depending and rearwardlydisposed flanges.

2. A stamped and drawn sheet metal sink including a fluid receivingbowl, a drain board extending from at least one side of the bowl, acontinuous flat top rim formed integrally as a part of a dependingflange located in front of the bowl and drain board and having a portionlocated at one side of the bowl and another portion located at theopposite side of the drain board, a horizontal ledge of a materiallygreater width than the width of the rimbehind the bowl and drainboard-extending from said rim portion at one side of the bowl to saidrim portion at the opposite side of the drain board, aportion or saidledge being located in a plane below the rim, another portion of theledge being disposed in a plane diflerent from that of the remainderthereof, said drain board being located in a plane below the rim, anintegral splash back bent integrally upwardly from the rear of the ledgeand extending the entire length of the ledge and the "entire width ofthe rim at each end of the ledge,

a flange disposed rearwardly of the said splash -rn" or turned rim areintended to describethe usual rim extremity of the bowlvpanel and splashback panel whether or not back around the sides and top of the splashback,

the rearwardly disposed flange portions at the sides of the splash backbeing located respectively in coplanar continuation of the dependingflange portions at said one side of the bowl-and the opposite side ofthe drain board, and an inturned flange extending from said dependingand rearwardly disposed flanges.

3. 'A sink stamped and drawn from a single sheet of metal to provide afluid receiving bowl terminating in a drain board extending from atleast one side thereof and in an integral upright spalsh back, therebeing a flat top turned rim extending around three sides of the bowlformed as a part of a depending flange also extending around three sidesof the bowl and terminating at its lower edge in an inturned flange; thesplash back being bent substantially vertically on a line offsetrearwardly from the rear wall of the bowl to provide between said walland splash back a substantially horizontal ledge 01 a width materiallygreater than the width of said rim, said ledge and drain board extendingeach in a plane below the plane of the rim and said ledge extendingbehind the drain board and bowl the full distance between the oppositeends of the rim, and the junctures between the ends of the rim and thesplash back being seamless.

4. A sink stamped and drawn from a single sheet of metal to provide afluid receiving bowl terminating in a drain board extending from atleast one side thereof and in an integral upright splash back, therebeing a flat top turned rim extending around three sides of the bowlformed as a part of a depending flange also extending around three sidesof the bowl and terminating at its lower edge in an inturned flange; thesplash back being bent substantially vertically on a line oifsetrearwar'dly from the rear wall of the bowl to provide between said walland splash back a substantially horizontal ledge of a width materiallygreater than the width of said rim, said ledge and drain board extendingeach in a plane below the plane of the rim and said ledge extendingbehind the drain board and bowl the full distance between the oppositeends of the rim, the junctures between the ends of the rim and splashback being seamless, said splash back having a rearwardly extended bentflange extending continuously around the top and endsthereof'terminating in inturned wall flanges, and the end flanges of thesplash back and rim having their junctures at least in part seamless.

JACQUES STANITZ

